Concentrator.



Patented lune ll. I90I.

J. MELLEIN.

CONCENTRATOR. .Application med mer. 26, 1900.

(No Model.)

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AUNITED STATE-s JACOB MELLEIN, ODENVER, COLORADO.

OONOENTRATOR.

SBEFGATION forming part of Letters Patent No. 676,388, dated June 11 1901.

Application iilefl March 2 6, 1 9 OO.

To @ZZ whom it may concern.-

Be itknown that LJACOB MELLEIma citizen of the United States ot' America, residing at Denver,in the'county of Arapahoe and State of Colorado, have invented certain new and useful Improvements in Concentrators; and Ido declare the following to be a full, clear,and eX- act description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings,and to the figures of reference marked thereon, which form a part of this specification.

My invention relates to improvements in concentrators more especially intended for use in placer mining, my object being to provide an apparatus of this class which shall be simple in construction, economical in cost, reliable, durable, and eflicient in use; and to these ends the invention consists of the features, arrangements, and combinations hereiuafter described and claimed, all of which will be fully understood by reference to the accompanying drawings, in which is illustrated an embodiment thereof.

In the drawings, Figure 1 is a top or plan View of my improved machine. Fig.2 is a section taken on the line X X, Fig. l, viewed in the direction of the arrow. Fig. 3 is a section taken on the line Y Y, Fig. 1.

Similar reference characters indicating corresponding parts in the views, let the numeral 5 designate a suitable frame, at one extremity of which is located a horizontal revoluble pan 6, whose bottom is provided with a drum 7, to which is attached a large sprocketwheel S. The bottom of the drum is provided with ajournal 9,engagingabearing10,mount ed on the lower part of the frame. The pan Gis provided with a conical center 6, located directly beneath ahopper 15, mounted on the upper part of the frame. Between the hopper and the pan is located a series of radial bars 14,Whose outer extremities are attached to a rectangular top frame l5, mounted on the main frame 5. To the inner extremities of the bars 14: is attached a ring 16, surrounding the opening through which the material to be treated passes from the hopper to the pan. To the bars 14 are attached depending agitating-arms 17, which project into the pan 6, terminating near its bottom.

Serial No. 10,205.v (No model.)

'Ihe pan is rotated through the instrumentality of a chain 18, which passes around the sprocket Slot the drum and a smaller sprocket 19, mounted on the lower part of a vertical shaft 20, journaled in one end Ot the frame 5. To thev upper extremity ot this shaft is made fast a bevel-gear 2l, which meshes with a similar gear 22, fast on a horizontal shaft 23, provided with a iiy-wheel 24, to which is attached a crank 25.

rlhe pan is supplied with the necessary water for separating the mineral from the gangue through theinstrumentalityOfapump 26, whose piston-rod t27 is connected with one extremity of a pitman 2S, Whose opposite extremity is connected with a wrist attached to the gear 22 outside of its center. vThe pumpcylinder 2G is connected with a pipe 29, leading from a source of water-supply. A discharge-pipe 30 is connected with the upper part of the pump-cylinder and leads therefrom to a point above the center of the hopper, into which it discharges.

From the foregoingv description it will be understood that if the shaft 23 be turnedthe pan will be rotated through the instrumentality of the shaft 20, the sprocket-wheels 8 and 19, and the chain 18, the pump being at the same time operated by virtue of the construction just described. The material to be treated is thrown `into the hopper and passes to the rotary pan, together with the necessary quantity of water. The cone 6, acting in conjunction With the water, distributes the material as it passes into the pan, and the separation of the mineral from the gangue is effected by the combined action of the rotary pan and the agitating-arms 17. The pan is kept full of water, which overflows therefrom,- carrying away the gangue, While the mineral settles to the bottom of the pan.

Attached to one of the arms 14 is a sort of shovel or plow 32, which projects into the pan near its Outer edge and facilitates the discharge of the gangue. The drum upon which the pan is mounted is supported on the side nearer the small sprocket 9 by a roller 23.

Having thus described my invention, what I claim is In a concentrator the combination with a suitable frame, of a horizontally, revoluble pan whose bottom is provided with a drum having a sprocket-wheel, the said drum Vterminating at its bottom in a journal engaging the bearing of the frame, the pan being provided with a conical center, a hopper mounted abovethe pan, a top frame mounted on the main frame, a series of radially-disposed bars located between the pan and the hopper, their outer extremities being attached to the frame, a ring attached to their inner extremities, depending agitating-arms attached to the bars and projecting in to the pan, an opl erating-ehain connected with the sprocket on the drum of the pan, means for actuating the chain, a pump operated by the chain-operat- 15 ing means, aconduitleading from the pump to discharge water into the pan, and a shovel or plow attached to one ot' the depending agitating-arms, and projecting into the pan near its outer edge to throw out the gangue 2o as the pan rotates.

In testimony whereof I afx my signature in presence of two witnesses.

JACOB MELLEIN.

Witnesses:

GRACE MYTINGER, H. J. OBRIEN. 

